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GANZ PERIACETABULAR OSTEOTOMY: THE CHRISTCHURCH EXPERIENCE



Abstract

Since 1989 the Ganz periacetabular osteotomy has been performed in Christchurch for pain arising from hip dysplasia in selected patients. This review was performed to assess symptoms, function and radiographic appearances at a medium term follow up.

The results of 14 peri-acetabular osteotomies performed in 13 patients was evaluated. The mean age of the patients at the time of surgery was 23 years (range 17–44). The mean duration of follow up was 5 years (3 months to 13 years). The follow up examination included clinical evaluation, chart review and radiographic analysis. Of the 13 patients evaluated, improvement in pain was achieved in 12. One required a hip replacement and intermittent discomfort was noted in 3 resulting in restriction in activites. Complications included sciatic nerve palsy (1), leg length discrepancy (2), superficial wound infection (1), scar tenderness (2), numbness in lateral femoral cutaneous nerve distribution (5) and pain from prominent metalware (1). Improvement in femoral head coverage was seen in all patients on follow up x-ray with minimal progression of arthritic changes. Improvement in symptoms ranging from complete relief of pain and participation in high intensity sporting events to intermittent discomfort was achieved. One failure occurred requiring arthroplasty. Significant complications occurred but have largely resolved.

The osteotomy was successful in obtaining good relief of symptoms and has prevented the requirement for total hip replacement in this young active group.

Correspondence should be addressed to the editorial secretary: Associate Professor Jean-Claude Theis, Department of Orthopaedic Surgery, Dunedin Hospital, Private Bag 1921, Dunedin, New Zealand.